Cigarette paper, and preparation method and application thereof

Abstract

The present application relates to a kind of cigarette paper and its preparation method and application.The cigarette paper is divided into M regions in order from far away filter end to close filter end, the quantitative of ash improvement component of the M regions meets the following law: from far away filter end to close filter end direction, the quantitative of ash improvement component of each region first increases and then decreases;The M is an integer of 3-6;The ash improvement component includes the following components by weight: inorganic filler 1 part, combustion improver 0.07-0.12 parts.The specific ash improvement component of the present application is distributed in the cigarette paper according to a certain rule, so that the cigarette is made into cigarette after the cigarette paper, the crack rate of the multiple ash column formed by the cigarette being sucked by mouth is good, meets the production requirement of downstream cigarette manufacturer, also makes the consumer experience of cigarette before and after sucking consistent.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cigarette paper, more particularly, to a cigarette paper, a preparation method and application thereof. BACKGROUND

[0002] As the support body of the cigarette, the cigarette paper directly participates in the combustion of the cigarette, and the related characteristics of the cigarette paper play a key role in the ash covering performance of the cigarette, and good ash covering performance of the cigarette can bring good smoking experience to the consumer.

[0003] Currently, the industry has carried out the standard development work of evaluating the ash covering performance of the cigarette; there are also many studies on improving the ash covering performance of the cigarette by improving the performance of the cigarette paper, for example, the patent with the publication number CN106245440A proposes to improve the overall ash covering effect of the cigarette by spraying an auxiliary solution containing guar gum and sodium tartrate or an auxiliary solution containing guar gum and modified beta cyclodextrin to the cigarette paper; the patent with the publication number CN108951287A proposes to improve the ash covering performance of the cigarette by uniformly dropping and coating a dropping solution containing dextran to the cigarette paper; and the patent with the publication number CN115369681A proposes to improve the ash covering performance of the cigarette by adding lactic acid bacteria polysaccharide obtained by culturing lactic acid bacteria and plant protein peptides to the cigarette paper.

[0004] The evaluation indexes of the ash covering performance include ash covering color, crack rate, ash shrinkage rate, carbon line uniformity, etc., and different evaluation indexes have different evaluation angles for the ash covering performance. Among them, the crack rate refers to the proportion of the crack area of the ash column to the total area of the ash column after the cigarette is burned, which is used to represent the degree of easy falling of the ash covering, and the greater the crack rate, the easier the ash covering falls.

[0005] The existing research on the crack rate of the ash column of the cigarette considers the influence of the cigarette paper on the crack rate of the ash column of the whole cigarette, such as reducing the crack rate of the ash column of the whole cigarette. However, when the cigarette is actually smoked, the cigarette is smoked by mouthful to form multiple ash columns, and the crack rate between the multiple ash columns is usually inconsistent, which will cause the consumer to have different smoking experiences for the front and rear smoking of a single cigarette, thereby affecting the sensory experience. At the same time, since the crack rate is related to the characteristics of the cigarette paper, the downstream cigarette production enterprises have also put forward improvement requirements in this regard to the upstream cigarette paper suppliers.

[0006] Therefore, it is necessary to improve the problem of poor consistency of the crack rate between the multiple ash columns formed by the cigarette being smoked. SUMMARY

[0007] The primary object of the present application is to overcome the problem of poor consistency of the crack rate between the multiple ash columns formed by the cigarette being smoked in the prior art, and to provide a cigarette paper.

[0008] A further object of the present application is to provide a method for preparing the cigarette paper.

[0009] A further object of the present application is to provide the use of the above-mentioned cigarette paper in preparing a cigarette.

[0010] The above-mentioned objects of the present application are achieved by the following technical solutions.

[0011] A cigarette paper, which is divided into M regions in order from the end far away from the filter tip to the end close to the filter tip, the amount of the ash improvement component in the M regions complies with the following rule: from the end far away from the filter tip to the end close to the filter tip, the amount of the ash improvement component in each region first increases and then decreases.

[0012] The M is an integer of 3-6.

[0013] The ash improvement component comprises the following components by weight: inorganic filler 1 part, combustion improver 0.07-0.12 parts.

[0014] The amount of the specific ash improvement component in the cigarette paper is distributed according to a certain rule, which makes the consistency of the crack rate between the multiple ash columns formed by the cigarette being puffed in turns good. The reason may be that the tobacco filling at both ends of the cigarette is usually denser than that in the middle. In addition, the combustion rate of the cigarette segment closer to the filter tip is usually faster when the cigarette is puffed. The distribution of the amount of the ash improvement component in the cigarette paper according to a certain rule (from the end far away from the filter tip to the end close to the filter tip, first increasing and then decreasing) and the regulation of the mass ratio of the inorganic filler and the combustion improver in the ash improvement component within a certain range can synergistically regulate the combustion rate, ash content and ash adhesion of different regions of the cigarette prepared from the cigarette paper, and thus make the consistency of the crack rate between the multiple ash columns of the cigarette (the coefficient of variation is small) good.

[0015] If the amount of the ash improvement component is distributed according to an inappropriate rule, such as gradually increasing, gradually decreasing, first decreasing and then increasing or uniformly distributing from the end far away from the filter tip to the end close to the filter tip, the consistency of the crack rate between each ash column formed by the cigarette being puffed in turns cannot be well improved. If only the inorganic filler or the combustion improver is used as the ash improvement component, the consistency of the crack rate between each ash column formed by the cigarette being puffed in turns cannot be well improved either.

[0016] It should be understood that the first increasing and then decreasing in the present application refers to the amount of the ash improvement component in adjacent regions first increasing by 1-21 g / m 2 , and then decreasing by 3-10 g / m 2decreases in the order of: the region farthest from the filter end, the region second farthest from the filter end, and the region closest to the filter end; and among the M regions: the region second farthest from the filter end or the region third farthest from the filter end has the highest amount of the ash improvement component.

[0017] Preferably, among the M regions: the region closest to the filter end has an amount of the ash improvement component of 3-22 g / m 2 , the region farthest from the filter end has an amount of the ash improvement component of 1-3 g / m 2 , and the remaining regions independently have an amount of the ash improvement component of 3-24 g / m 2 .

[0018] Preferably, the amount of the ash improvement component of the M regions is regulated by the amount of coating liquid applied to the base paper of the cigarette paper, the coating liquid containing an inorganic filler and a combustion-supporting agent.

[0019] Preferably, the inorganic filler is at least one of calcium carbonate or magnesium hydroxide.

[0020] Preferably, the combustion-supporting agent is at least one of a phosphate or a citrate.

[0021] More preferably, the combustion-supporting agent is a phosphate.

[0022] In the ash improvement component system of the present application, the phosphate is selected as the combustion-supporting agent, and the consistency of the crack rate between the multiple ash columns formed by the cigarettes made of the cigarette paper being puffed one by one is better.

[0023] More preferably, the phosphate includes but is not limited to at least one of potassium phosphate or sodium phosphate.

[0024] More preferably, the citrate includes but is not limited to at least one of potassium citrate or citric acid.

[0025] Preferably, the ash improvement component further includes a thickening agent of 0.01-0.025 parts.

[0026] More preferably, the thickening agent is at least one of dialdehyde starch, cationic starch, oxidized starch, esterified starch, crosslinked starch, etherified starch, acid-treated starch, sodium alginate, or guar gum.

[0027] Preferably, among the M regions in the axial direction of the cigarette: the width of the region farthest from the filter end is 4-15 mm, the width of the region closest to the filter end is 7-15 mm, and the width of the remaining regions independently is 8-21 mm.

[0028] Specifically, the M is 4, and the M regions include, in the order from the region farthest from the filter end to the region closest to the filter end: a region M 4-1 , a region M4-2 region, M 4-3 region and M 4-4 region; the M 4-1 region, M 4-2 region, M 4-3 region and M 4-4 widths of the regions in the axial direction of the cigarette are 5-8 mm, 15-18 mm, 18-21 mm and 9-14 mm, respectively; the M 4-1 region, M 4-2 region, M 4-3 region and M 4-4 quantities of the ash improvement components of the regions are 1-3 g / m 2 , 3-5 g / m 2 , 18-24 g / m 2 and 10-21 g / m 2 , respectively; the M 4-3 quantity of the ash improvement components of the M 4-4 region is greater than that of the M 4-3 region and the difference between the quantities of the ash improvement components of the M 4-4 region and the M 2 region is at least 3 g / m .

[0029] Specifically, the M is 5, and from the direction farthest from the filter end to the direction closest to the filter end, the M 5-1 region, M 5-2 region, M 5-3 region, M 5-4 region and M 5-5 region are included in order; the M 5-1 region, M 5-2 region, M 5-3 region, M 5-4 region and M 5-5 widths of the regions in the axial direction of the cigarette are 12-15 mm, 8-10 mm, 8-10 mm, 9-12 mm and 7-10 mm, respectively; the M 5-1 region, M 5-2 region, M 5-3 region, M 5-4 region and M 5-5 quantities of the ash improvement components of the regions are 1-3 g / m 2 , 3-5 g / m 2 , 18-24 g / m 2 , 10-15 g / m 2 and 3-5 g / m 2 .

[0030] Preferably, the basis weight of the base paper of the cigarette paper is 29-40 g / m 2 .

[0031] Preferably, the basis weight of a certain area of ​​the cigarette paper is the sum of the basis weight of the base paper of the cigarette paper and the basis weight of the ash improvement component in the area.

[0032] Preferably, the air permeability of the base paper of the cigarette paper is 250-400 CU.

[0033] The preparation method of the cigarette paper comprises the following steps: partitioning the base paper of the cigarette paper according to the quantitative design rule of the ash improvement component in the M areas of the cigarette paper, coating the paper with the coating liquid, and drying the paper to obtain the cigarette paper.

[0034] Preferably, the viscosity of the coating liquid is 50 to 200 mPa.s.

[0035] Preferably, the coating liquid is applied by a printing roller; the line number of the printing roller is 50 to 200 LPI.

[0036] The use of the above-mentioned cigarette paper in the preparation of cigarettes also falls within the protection scope of the present invention.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The specific ash-enhancing component of the present invention is quantitatively distributed on the cigarette paper according to a certain regularity, so that after the cigarette paper is made into a cigarette, the crack rate between the multiple ash columns formed by smoking the cigarette one by one is consistent, meeting the production requirements of downstream cigarette manufacturers and also ensuring that consumers have a consistent smoking experience before and after the cigarette. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A is a schematic diagram of the cigarette paper provided in Example 1; Figure 1 B is a schematic diagram of a cigarette made of the cigarette paper provided in Example 1. DETAILED DESCRIPTION

[0040] In order to more clearly and completely describe the technical solution of the present invention, the present invention is further described in detail through specific embodiments below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Various changes can be made within the scope of the rights of the present invention.

[0041] Example 1

[0042] This embodiment provides a cigarette paper having a length of 54 mm. The cigarette paper is divided into four regions (denoted as M and M respectively) in the order from the farthest end to the closest end of the filter according to the distance of the cigarette smoked and burned. 4-1 Area, M 4-2 Area, M 4-3 Area and M 4-4 region), such asFigure 1 A shown in FIG. 1; the widths of the four regions in the axial direction of the cigarette are 5.7 mm, 16.2 mm, 18.5 mm and 13.6 mm, respectively. 4-1 Region M 4-2 Region M 4-3 Region M 4-4 The quantitative design values of the ash improvement components in the four regions are 1 g / m 2 , 3 g / m 2 , 24.0 g / m 2 and 21 g / m 2 , respectively; the ash improvement components include calcium carbonate (inorganic filler), potassium phosphate (combustion improver) and sodium alginate (thickener), wherein the quantitative design values of the calcium carbonate (inorganic filler) in the four regions M 4-1 , M 4-2 , M 4-3 and M 4-4 are 0.9 g / m 2 , 2.7 g / m 2 , 21.6 g / m 2 and 18.9 g / m 2 , respectively; the quantitative design values of the potassium phosphate (combustion improver) are 0.08 g / m 2 , 0.24 g / m 2 , 1.92 g / m 2 and 1.68 g / m 2 , respectively; the quantitative design value of the sodium alginate (thickener) is 0.02 g / m 2 , 0.06 g / m 2 , 0.48 g / m 2 and 0.42 g / m 2 , respectively. The basis weight of the base paper of the cigarette paper is 30 g / m 2 .

[0043] The cigarette paper preparation method of the present embodiment includes the following steps:

[0044] 1) According to the distance of each puff of a cigarette and the ash cracking rate of the whole cigarette, the base paper of the cigarette paper is divided into four regions M 4-1 , M 4-2 , M 4-3 and M 4-4 , respectively; the widths of the four regions in the axial direction of the cigarette are 5.7 mm, 16.2 mm, 18.5 mm and 13.6 mm, respectively; wherein the air permeability of the base paper is 250 CU and the basis weight is 30 g / m 2 .

[0045] 2) Select a printing roller with 50-200 LPI to coat the coating liquid on the four to-be-coated areas of the base paper of the cigarette paper, and then perform infrared drying and hot cylinder drying in sequence, to obtain the cigarette paper. The coating amount of the coating liquid on the four to-be-coated areas is about 1.7 g / m 2 , 5 g / m 2 , 40 g / m 2 , and 35 g / m 2 , respectively.The composition of the coating liquid is: calcium carbonate 54 wt%, potassium phosphate 4.8 wt%, sodium alginate 1.2 wt%, and water 40 wt%.

[0046] The schematic diagram of the cigarette made of the cigarette paper of the embodiment is shown in B of FIG. 1. Figure 1

[0047] Take the base paper and the cigarette paper of the embodiment, respectively, to make cigarettes, then test the crack rate of the ash column formed in each area (the test method of the crack rate can refer to YC / T 607-2024, Determination of cigarette ash by computer vision method), and calculate the crack rate variation coefficient of the cigarette, respectively. The results are shown in Table 1 below:

[0048] Table 1

[0049] Region M 4-1 ]]> M 4-2 ]]> M 4-3 ]]> M 4-4 ]]> Coefficient of variation Base paper 1.9 2.4 8.5 6.9 66.5％ Cigarette paper 1.5 1.3 1.5 1.2 10.9％

[0050] From Table 1, it can be seen that the crack rate variation coefficient of each area of the cigarette made of the base paper is large, which means that the crack rate of the ash between each segment of the ash column formed by smoking the cigarette is large; while the crack rate variation coefficient of each area of the cigarette made of the cigarette paper loaded with the ash improvement component according to a certain distribution rule is small, which means that the consistency of the crack rate between each segment of the ash column formed by smoking the cigarette is good.

[0051] Embodiment 2

[0052] The embodiment provides a cigarette paper, the length of which is 50 mm, and according to the distance of a cigarette smoked by mouth by mouth, the cigarette paper is divided into five areas (recalled as M 5-1 area, M 5-2 area, M 5-3 area, M 5-4 area, and M 5-5 area) in order from the end far away from the filter to the end close to the filter. The width of each area in the axial direction of the cigarette is 12.2 mm, 9.0 mm, 9.6 mm, 10.3 mm, and 8.9 mm, respectively. The design value of the basis weight of M 5-1 area, M 5-2 area, M 5-3 area, M 5-4 area, and M 5-5 area is 2 g / m 2 , 5 g / m2 , 20.0 g / m 2 , 12 g / m 2 , and 3 g / m 2 ; the ash improvement component includes calcium carbonate (inorganic filler), potassium phosphate (combustion improver), and sodium alginate (thickener), wherein M 5-1 region, M 5-2 region, M 5-3 region, M 5-4 region, and M 5-5 region are respectively 1.8 g / m 2 , 4.5 g / m 2 , 18 g / m 2 , 10.8 g / m 2 , and 2.7 g / m 2 ; the quantitative design value of potassium phosphate (combustion improver) is respectively 0.18 g / m 2 , 0.45 g / m 2 , 1.8 g / m 2 , 1.1 g / m 2 , and 0.27 g / m 2 ; the quantitative design value of sodium alginate (thickener) is respectively 0.02 g / m 2 , 0.05 g / m 2 , 0.2 g / m 2 , 1.2 g / m 2 , and 0.03 g / m 2 . The basis weight of the base paper of the cigarette paper is 30 g / m 2 .

[0053] The cigarette paper preparation method of the embodiment includes the following steps:

[0054] 1) According to the distance of each puff of a cigarette and the ash cracking rate of the whole cigarette, the base paper of the cigarette paper is divided into five coating areas, and the width of the five coating areas in the axial direction of the cigarette is respectively 12.2 mm, 9.0 mm, 9.6 mm, 10.3 mm, and 8.9 mm; wherein the air permeability of the base paper is 250 CU, and the basis weight is 30 g / m 2 .

[0055] 2) A printing roller with 50-200 LPI is selected to coat the coating liquid on the five coating areas of the base paper of the cigarette paper, and then infrared drying and hot cylinder drying are performed in sequence, thereby obtaining the cigarette paper. The coating amount of the coating liquid on the five coating areas is respectively about 3.3 g / m 2 , 8.3 g / m 2 , 33.3 g / m 2 , 20 g / m 2 , and 5 g / m 2The composition of the coating liquid is: calcium carbonate 54wt%, potassium phosphate 5.4wt%, sodium alginate 0.6wt%, and water 40wt%.

[0056] The raw paper and the cigarette paper of the present embodiment were respectively made into cigarettes, and then the crack rate of the ash column formed in each area was tested (the test method of the crack rate can refer to YC / T 607-2024, Determination of cigarette ash by computer vision method), and the crack rate variation coefficient of the cigarette was calculated respectively, and the results are shown in Table 2 as follows:

[0057] Table 2

[0058] Region M 5-1 ]]> M 5-2 ]]> M 5-3 ]]> M 5-4 ]]> M 5-5 ]]> Coefficient of variation Base paper 2.0 6.5 9.3 8.5 2.3 59.7％ Cigarette paper 1.3 1.1 1.7 1.2 1.5 17.7％

[0059] From Table 2, it can be seen that the crack rate variation coefficient of each area of the cigarette made of the raw paper is large, which means that the crack rate of the ash between each segment of the ash column formed by smoking the cigarette is large; while the crack rate variation coefficient of each area of the cigarette made of the cigarette paper obtained by loading the ash improvement component on the raw paper according to a certain distribution rule is small, which means that the consistency of the crack rate between each segment of the ash column formed by smoking the cigarette is good.

[0060] Example 3

[0061] The difference between the present embodiment and Example 1 is that the M 4-1 region, M 4-2 region, M 4-3 region and M 4-4 region are respectively 7.0mm, 17.0mm, 20.0mm and 10.0mm in the axial direction of the cigarette.

[0062] The raw paper and the cigarette paper of the present embodiment were respectively made into cigarettes, and then the crack rate of the ash column formed in each area was tested (the test method of the crack rate can refer to YC / T 607-2024, Determination of cigarette ash by computer vision method), and the crack rate variation coefficient of the cigarette was calculated respectively, and the results are shown in Table 3 as follows:

[0063] Table 3

[0064] Region M 4-1 ]]> M 4-2 ]]> M 4-3 ]]> M 4-4 ]]> Coefficient of variation Base paper 2.2 3.0 8.1 7.0 62.2％ Cigarette paper 1.1 1.2 1.6 1.5 15.7％

[0065] From Table 3, it can be seen that the crack rate variation coefficient of each area of the cigarette made of the raw paper is large, which means that the crack rate of the ash between each segment of the ash column formed by smoking the cigarette is large; while the crack rate variation coefficient of each area of the cigarette made of the cigarette paper obtained by loading the ash improvement component on the raw paper according to a certain distribution rule is small, which means that the consistency of the crack rate between each segment of the ash column formed by smoking the cigarette is good.

[0066] Example 4

[0067] The embodiment differs from embodiment 1 in that M 4-1 Region, M 4-2 Region, M 4-3 Region and M 4-4 The quantitative design values of the ash improvement components in the regions are respectively 3 g / m 2 , 4 g / m 2 , 19.0 g / m 2 and 10 g / m 2 ; the ash improvement components include calcium carbonate (inorganic filler), potassium phosphate (combustion improver) and sodium alginate (thickener), wherein the quantitative design values of the calcium carbonate (inorganic filler) in the regions M 4-1 , M 4-2 , M 4-3 , and M 4-4 are respectively 2.7 g / m 2 , 3.2 g / m 2 , 17.1 g / m 2 and 9.0 g / m 2 ; the quantitative design values of the potassium phosphate (combustion improver) are respectively 0.27 g / m 2 , 0.32 g / m 2 , 1.71 g / m 2 and 0.9 g / m 2 ; and the quantitative design value of the sodium alginate (thickener) is 0.03 g / m 2 , 0.04 g / m 2 , 0.19 g / m 2 and 0.1 g / m 2 .

[0068] The base paper and the cigarette paper of the embodiment were respectively made into cigarettes, and then the crack rate of the ash column formed in each region was tested (the test method of the crack rate can refer to YC / T 607-2024, Determination of Ash in Cigarette by Computer Vision Method), and the coefficient of variation of the crack rate of the cigarettes was calculated respectively, and the results are shown in Table 4.

[0069] Table 4

[0070] Region M 4-1 ]]> M 4-2 ]]> M 4-3 ]]> M 4-4 ]]> Coefficient of variation Base paper 1.9 2.4 8.5 6.9 66.5％ Cigarette paper 1.4 1.5 2.3 1.9 23.2％

[0071] From Table 4, it can be seen that the coefficient of variation of the crack rate of each region of the cigarette made of the base paper is large, which means that the crack rate of the ash between each segment of the ash column formed by the cigarette being smoked is large; and the coefficient of variation of the crack rate of each region of the cigarette made of the cigarette paper obtained by loading the ash improvement components on the base paper according to a certain distribution rule is small, which means that the consistency of the crack rate between each segment of the ash column formed by the cigarette being smoked is good.

[0072] Example 5

[0073] The difference between this example and Example 1 is that calcium carbonate is replaced by magnesium hydroxide.

[0074] The base paper and cigarette paper of this example were respectively made into cigarettes, and then the crack rate of the ash column formed in each area was tested (the test method of crack rate can refer to YC / T 607-2024, Determination of cigarette ash by computer vision method), and the crack rate variation coefficient of the cigarette was calculated respectively, and the results are shown in Table 5 below:

[0075] Table 5

[0076] Region M 4-1 ]]> M 4-2 ]]> M 4-3 ]]> M 4-4 ]]> Coefficient of variation Base paper 1.9 2.4 8.5 6.9 66.5％ Cigarette paper 1.3 1.5 1.2 1.7 15.6％

[0077] From Table 5, it can be seen that the crack rate variation coefficient of each area of the cigarette made of the base paper is large, which means that the crack rate of the ash between each ash column formed by smoking the cigarette is large; while the crack rate variation coefficient of each area of the cigarette made of the cigarette paper obtained by loading the ash improvement component on the base paper according to a certain distribution rule is small, which means that the consistency of the crack rate between each ash column formed by smoking the cigarette is good.

[0078] Example 6

[0079] The difference between this example and Example 1 is that potassium phosphate is replaced by potassium citrate.

[0080] The base paper and cigarette paper of this example were respectively made into cigarettes, and then the crack rate of the ash column formed in each area was tested (the test method of crack rate can refer to YC / T 607-2024, Determination of cigarette ash by computer vision method), and the crack rate variation coefficient of the cigarette was calculated respectively, and the results are shown in Table 6 below:

[0081] Table 6

[0082] Region M 4-1 ]]> M 4-2 ]]> M 4-3 ]]> M 4-4 ]]> Coefficient of variation Base paper 1.9 2.4 8.5 6.9 66.5％ Cigarette paper 1.6 1.4 2.2 1.7 19.7％

[0083] From Table 6, it can be seen that the crack rate variation coefficient of each area of the cigarette made of the base paper is large, which means that the crack rate of the ash between each ash column formed by smoking the cigarette is large; while the crack rate variation coefficient of each area of the cigarette made of the cigarette paper obtained by loading the ash improvement component on the base paper according to a certain distribution rule is small, which means that the consistency of the crack rate between each ash column formed by smoking the cigarette is good.

[0084] Comparative Example 1

[0085] The difference between this example and Example 1 is that M 4-1 region, M 4-2 region, M 4-3 region and M 4-4 The ash improvement component design value of each region is 3 g / m 2; the ash improvement components include calcium carbonate (inorganic filler), potassium phosphate (combustion improver), and sodium alginate (thickening agent), wherein the quantitative design value of calcium carbonate (inorganic filler) in each region is 2.7 g / m 2 ; the quantitative design value of potassium phosphate (combustion improver) is 0.24 g / m 2 ; and the quantitative design value of sodium alginate (thickening agent) is 0.06 g / m 2 .

[0086] The base paper and cigarette paper of the present comparative example were respectively made into cigarettes, and then the crack rate of the ash column formed in each region was tested (the test method of the crack rate can refer to YC / T 607-2024, Determination of Ash of Cigarette - Computer Vision Method), and the crack rate variation coefficient of the cigarette was calculated respectively, and the results are shown in Table 7 as follows:

[0087] Table 7

[0088] Region M 4-1 ]]> M 4-2 ]]> M 4-3 ]]> M 4-4 ]]> Coefficient of variation Base paper 1.9 2.4 8.5 6.9 66.5％ Cigarette paper 1.2 1.4 6.5 5.3 75.1％

[0089] From Table 7, it can be seen that when the ash improvement components on the cigarette paper are uniformly distributed, the crack rate variation coefficient of each region of the cigarette made of the cigarette paper is large, which means that the situation that the consistency of the crack rate between each ash column formed by smoking the cigarette cannot be improved.

[0090] Comparative Example 2

[0091] The present comparative example is different from Example 1 in that: the quantitative design value of the ash improvement components in M 4-1 region, M 4-2 region, M 4-3 region and M 4-4 region is 1 g / m 2 , 3 g / m 2 , 21 g / m 2 and 24.0 g / m 2 ; the ash improvement components include calcium carbonate (inorganic filler), potassium phosphate (combustion improver), and sodium alginate (thickening agent), wherein the quantitative design value of calcium carbonate (inorganic filler) in M 4-1 region, M 4-2 region, M 4-3 region and M 4-4 region is 0.9 g / m 2 , 2.7 g / m 2 , 18.9 g / m 2 and 21.6 g / m 2 ; the quantitative design value of potassium phosphate (combustion improver) is 0.08 g / m 2 , 0.24 g / m 2 , 1.68 g / m 2 and 1.92 g / m 2; the quantitative design value of sodium alginate (thickening agent) is 0.02 g / m 2 , 0.06 g / m 2 , 0.42 g / m 2 , and 0.48 g / m 2 .

[0092] The base paper and the cigarette paper of the present comparative example were respectively made into cigarettes, and then the crack rate of the ash column formed in each area was tested (the test method of the crack rate can refer to YC / T 607-2024, Determination of cigarette ash by computer vision method), and the coefficient of variation of the crack rate of the cigarette was calculated respectively, and the results are shown in Table 8 as follows:

[0093] Table 8

[0094] Region M 4-1 ]]> M 4-2 ]]> M 4-3 ]]> M 4-4 ]]> Coefficient of variation Base paper 1.9 2.4 8.5 6.9 66.5％ Cigarette paper 1.3 1.1 2.3 1.3 36.1％

[0095] From Table 8, when the distribution rule of the ash improvement component on the cigarette paper is not suitable (from the direction farthest from the filter end to the closest to the filter end, the ash improvement component gradually increases), the coefficient of variation of the crack rate of each area of the cigarette made of the cigarette paper is still large, which means that the improvement effect is poor in the case that the consistency of the crack rate between each segment of the ash column formed by the cigarette being smoked is poor.

[0096] Comparative Example 3

[0097] The present comparative example is different from Example 1 in that: the quantitative design value of the ash improvement component in the M 4-1 region, the M 4-2 region, the M 4-3 region and the M 4-4 region is 24.0 g / m 2 , 21 g / m 2 , 3 g / m 2 and 1 g / m 2 respectively; the ash improvement component includes calcium carbonate (inorganic filler), potassium phosphate (combustion improver) and sodium alginate (thickening agent), wherein the quantitative design value of calcium carbonate (inorganic filler) in the M 4-1 region, the M 4-2 region, the M 4-3 region and the M 4-4 region is 21.6 g / m 2 , 18.9 g / m 2 , 2.7 g / m 2 and 0.9 g / m 2 respectively; the quantitative design value of potassium phosphate (combustion improver) is 1.92 g / m 2 , 1.68 g / m 2 , 0.24 g / m 2 and 0.08 g / m 2; the quantitative design value of sodium alginate (thickening agent) is 0.48 g / m 2 , 0.42 g / m 2 , 0.06 g / m 2 , and 0.02 g / m 2 .

[0098] The base paper and cigarette paper of the present comparative example were respectively made into cigarettes, and then the crack rate of the ash column formed in each area was tested (the test method of crack rate can refer to YC / T 607-2024, Determination of cigarette ash by computer vision method), and the coefficient of variation of crack rate of the cigarette was calculated respectively, and the results are shown in Table 9 as follows:

[0099] Table 9

[0100] Region M 4-1 ]]> M 4-2 ]]> M 4-3 ]]> M 4-4 ]]> Coefficient of variation Base paper 1.9 2.4 8.5 6.9 66.5％ Cigarette paper 1.2 1.5 4.2 3.2 56.3％

[0101] From Table 9, when the distribution of ash improvement components on the cigarette paper is not suitable (i.e., the ash improvement components gradually decrease from the direction farthest from the filter end to the direction closest to the filter end), the coefficient of variation of crack rate of each area of the cigarette made of the cigarette paper is still large, which means that the improvement effect is poor in the case that the consistency of crack rate between each segment of ash column formed by smoking the cigarette is poor.

[0102] Comparative Example 4

[0103] The present comparative example is different from Example 1 in that: the quantitative design value of ash improvement components in the M 4-1 region, the M 4-2 region, the M 4-3 region, and the M 4-4 region is 0.1 g / m 2 , 0.3 g / m 2 , 2.4 g / m 2 , and 2.1 g / m 2 respectively; the ash improvement components include potassium phosphate (combustion improver) and sodium alginate (thickening agent), wherein the quantitative design value of potassium phosphate (combustion improver) in the M 4-1 region, the M 4-2 region, the M 4-3 region, and the M 4-4 region is 0.08 g / m 2 , 0.24 g / m 2 , 1.92 g / m 2 , and 1.68 g / m 2 respectively; and the quantitative design value of sodium alginate (thickening agent) is 0.02 g / m 2 , 0.06 g / m 2 , 0.48 g / m 2 , and 0.42 g / m 2 .

[0104] The base paper and the cigarette paper of the present comparative example were respectively made into cigarettes, and then the crack rate of the ash column formed in each area was tested (the test method of the crack rate can refer to YC / T 607-2024, Determination of cigarette ash by computer vision method), and the coefficient of variation of the crack rate of the cigarette was calculated respectively, and the results are shown in Table 10 as follows:

[0105] Table 10

[0106] Region M 4-1 ]]> M 4-2 ]] M 4-3 ]]> M 4-4 ]]> Coefficient of variation Base paper 1.9 2.4 8.5 6.9 66.5％ Cigarette paper Region Coefficient of variation Base paper Cigarette paper Region Coefficient of variation Base paper Cigarette paper Region Coefficient of variation Base paper Cigarette paper 1.8 2.0 7.0 5.0 63.4％

[0107] From Table 10, it can be seen that when only the combustion improver is used as the ash improvement component, the coefficient of variation of the crack rate of each area of the cigarette made of the cigarette paper is large, which means that the poor consistency of the crack rate between each ash column formed by the cigarette being smoked cannot be improved.

[0108] Obviously, the above embodiments of the present application are merely exemplary and are not intended to limit the embodiments of the present application. Based on the above description, other different forms of changes or variations can be made by those of ordinary skill in the art. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A cigarette paper, characterized by, The cigarette paper is divided into M regions in order from the farthest end to the closest end of the filter, and the quantitative content of the ash-enhancing component in the M regions conforms to the following rule: from the farthest end to the closest end of the filter, the quantitative content of the ash-enhancing component in each region first increases and then decreases; The M is 4 or 5; When M is 4, the direction from the farthest to the closest to the filter end includes M 4-1 Area, M 4-2 Area, M 4-3 Area and M 4-4 area; the M 4-1 Area, M 4-2 Area, M 4-3 Area and M 4-4 The widths of the regions in the axial direction of the cigarette are 5-8 mm, 15-18 mm, 18-21 mm and 9-14 mm respectively; 4-1 Area, M 4-2 Area, M 4-3 Area and M 4-4 The quantitative content of the ash improvement components in the area is 1~3 g / m 2 3~5 g / m 2 , 18~24g / m 2 and 10~21g / m 2 ; The M 4-3 The quantitative content of the ash-enhanced component in the region is greater than M 4-4 Area and M 4-3 Area and M 4-4 The difference in the amount of the coating improvement component in the area is at least 3g / m 2 ; When M is 5, the direction from the farthest end of the filter to the closest end of the filter includes M 5-1 region, M 5-2 region, M 5-3 region, M 5-4 region, and M 5-5 region; the M 5-1 region, M 5-2 region, M 5-3 region, M 5-4 region, and M 5-5 region; the width of the regions in the axial direction of the cigarette is 12-15 mm, 8-10 mm, 8-10 mm, 9-12 mm, and 7-10 mm, respectively; the M 5-1 region, M 5-2 region, M 5-3 region, M 5-4 region, and M 5-5 region; the amount of the ash improvement component of the regions is 1-3 g / m 2 , 3-5 g / m 2 , 18-24 g / m 2 , 10-15 g / m 2 , and 3-5 g / m 2 , respectively. The ash packing improvement component includes the following components in parts by weight: 1 part of inorganic filler and 0.07-0.12 parts of combustion aid.

2. The cigarette paper according to claim 1, characterized in that, The quantitative amount of the ash encapsulation improving components in the M regions is controlled by the amount of the coating liquid coated on the base paper of the cigarette paper, wherein the coating liquid contains an inorganic filler and a combustion aid.

3. The cigarette paper of claim 1, wherein, The inorganic filler is at least one of calcium carbonate and magnesium hydroxide.

4. The cigarette paper of claim 1, wherein, The combustion improver is at least one of phosphate or citrate.

5. The cigarette paper of claim 1, wherein, The ash packaging improvement component also includes 0.01 to 0.025 parts of a thickener.

6. The cigarette paper of claim 1, wherein, The basis weight of the raw paper of the cigarette paper is 29~40 g / m 2 .

7. The method of producing the cigarette paper according to any one of claims 1 to 6, characterized by, The method comprises the following steps: dividing the base paper of the cigarette paper into zones according to the quantitative design rule of the ash-enhancing component in the M zones of the cigarette paper, coating the base paper with the coating liquid, and drying the base paper to obtain the cigarette paper.

8. Use of the cigarette paper according to any one of claims 1 to 6 in the preparation of cigarettes.

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